Collapsible tube



June 10 1 924.

c. TSC HIFFELY COLLAPSIBLIE TUBE Filed Nov. 3. 1921 gwumm ClaudeTscl'aiffely Patented June 10, 1924.

UNITED STATES PATENT OFFICE.

COLLAPSIBLE TUBE.

Application filed November 3, 1921. Serial No. 512,528.

To all whom it may concern:

Be it known that I, CLAUDE TSCHIFFELY,

.a citizen of the United States, residing at Washington, in the Districtof Columbia,

have invented certain new and useful Improveanents in Collapsible Tubes,of which the following is a specification.

My said invention relates to a collapsible tube for liquids orsemi-liquids such as tooth prevent ready disengagement of the capfromthe tube.

Referring to the accompanying drawings which are made a part hereof andon which similar reference characters indicate similar parts.

Figure 1 is an elevation of a collapsible tube and its cap, the latterbeing in position for attachment to the tube,

Figure 2 is a top View in closed position.

Figure 3 a horizontal section through the cap and the neck of the tube,and

Figure 4 is a partial vertical section of the device.

Figure 5 is a sectional view through the cap when removed from the tubeshowing the manner in which the top of the cap bulges downwardly.

In the drawings .10 indicates a collapsible tube of conventional formhaving at its up per end a threaded neck 11. An internally threaded cap12 is adapted to be screwed on the neck, the cap bein externally milledor roughened in usual fas ion. The cap has an aperture at 13 adapted toregister in one position with a corresponding aperture in said neck, thelatter being otherwise closed at the top by a transversely extendingportion. or plate 14. The top of the cap about the aperture 13isdownwardly beveled as shown at 15 to form a cutting edge ada ted to lieclosely against the plate 14, and th the cap may, bulge downward asshown in Figure 5 and be slightly resilient to maintain contact betweenthe same and the plate 14. When the apertures are brought together byscrewing down the cap the bulged top of the cap is flattened by the topof the-tube as shown. in Figure 4. When the cap is un-' screwed theresiliency of the top of the cap e upper part of i will restore thebulge and insure close contact between the top of the tube and the capso as to obtain a clean cuttingaction. This cutting edge is intended tosever the mate rial extruded from the tube from that remaining and ifsuch material is sufficientlyhard it will make a clean cut therethroughseparating the extruded part from the remaining part and at the sametime preventing waste of the material. Preferably the thread will be oflow pitch so that the up or down movement of the cap during the partialrevolution necessary to bring the two apertures into or out of registerwill be very limited in extent.

A portion of the thread 11 is cut away at one side of the neck asindicated at 16 and after the cap has been screwed down thereon aportion of the cap is punched in as at 17. This portion forms anabutment which will permit the cap to be rotated through a sector, hereshown as approximately a tpliarter revolution, but will strike against te end of the remaining thread and prevent further revolution. In ordinarcases the material of the cap and the tube 15, however, sufiicientlysoft so that: the internal abutment at 17 will crumble if sufiicientforce is used and thus permit removal of the ca should this bedesirable.

. Various modifications of my device will suggest themselves to thoseskilled in the art and therefore I do not limit myself to what is hereshown and described but only as indicated in the appended claims.

Having thus fully described mv said invention, what I clalm as new andesire to secure byLet-ters Patent, is:

1. A'disp'ensing device having a threaded neck, a threaded cap connectedthereto, said neck and cap having correspo-ndingapertures and means forplacing the apertured top of the cap under a tension whenever the top isscrewed "onthe cap to register the said'apertures, substantially as setforth.

2. A collapsible tube having a threaded neck, a threaded cap therefor, asegment of one of the threads being omitted and an inwardly projectingabutment on the other member ada ted to move in the space left by saidomitted thread segment, substantially as set forth.

3. A collapsible tube having an externall threaded neck, a caglhavinginternal threa s for engagement wit said neck, a portion of I one ofsaid threads being omitted, and an abutment on the opposing memberadapted to move in the space left by the omitted thread, substantiallyas set forth.

4. A dispensing device having a threaded neck, a threaded cap connectedthereto the top of said cap being curved inwardly and provided with anaperture formed with a cutting edge said neck having a flat faceengaging said curved portion of the cap and providedwith an aperture,and means incident to the rotation of the cap on the neck to registersaid apertures and distort and place under tension the top of the cap,substantially as set forth.

5. A container having a neck of unbroken cylindrical contour atthe'inside and having a helical outer thread 'a segment of one con- Inwitness whereof, I have hereunto set' my hand and seal at Washin ton,District of Columbia, this 3rd day of ovemher, A. D. nineteen hundredand twenty one.

CLAUDE TSCHIFFELY. Witnesses:

E. W. BRADFORD, O, M. KEYS

